Audi S4 H11 3000K Fog Light HID Kit installations are probably the most common upgrades performed to increase the brightness of the stock foglight assemblies on your S4. H.I.D., short for High Intensity Discharge, is a lighting technology that uses a xenon gas charged bulb in combination with an electronic ballast to regulate the current going through it. The resulting light of these TD Audi S4 3000K HID Xenon H11 Fog Lamp Kit can be up to three times brighter than traditional halogen bulbs. Also, by producing certain temperatures, our TD Xenon HID Conversion Kits can reliably produce truer colored light, more consistently without fading out like coated bulbs do.

Usually, Xenon HID lighting is only available on high end luxury cars, but with these H11 Audi S4 Slim Ballast 3000K TD Xenon H.I.D. Conversion Fog Lens Kit, you can convert your stock halogens to super bright HID lighting too. By just connecting a few plug and play connections and then mounting the SLIM ballast in a secure spot, you can experience 3000K supreme brightness in a high expanded field of vision. Also, unlike cheaper HID systems on the market, our TD Audi S4 Xenon H11 3000K Foglight HID systems are backed by a full one year warranty.

Install the new HID light bulbs into your S4's headlights. Be sure to use clean rubber gloves or avoid touching the glass on the HID light bulbs. Dirt or oil left on the glass of the bulb could cause the xenon gas to overheat and blow up the bulb. Lock the HID light bulbs into place.

Connect the remaining 3 plugs to the corresponding plugs on the HID Ballast.

Find a place to mount the ballast where it will be stable, away from heat, and not touch any moving parts in your S4's engine bay.

Use the included installation brackets, zip ties, or double sided tape to mount the ballast in place.

Reconnect your S4's negative battery terminal.

For HID lights installed into your headlights, aim your headlights down so that the S4 HID kit will not blind others drivers in front of you. Please see your S4 owner's manual for head lamp aiming instructions. Aiming may also be necessary for HID Fog Lights.

ENJOY A SAFER DRIVE WITH YOUR NEW SUPER BRIGHT HID LIGHTS!

What color HID Kit should I get for my S4?

For headlights and foglights, a 6000K super white HID kit (low watt) is by far the most popular choice among S4 owners. 8000K Blue HID kits come in second place for HID headlights. Even though they are called "blue" 8000K HID lights actually are still white, with a bit of a blue tint to them. 3000K Yellow is the most effective choice for HID foglights since yellow is scientifically proven to provide better visibility in rain, fog, or snow. 3000K Yellow (aka JDM Yellow) HID headlights are not legal for street use in certain communities.

I see separate listings for the high beam and low beam HID lights, but my S4 headlights uses one bulb for both (9004, 9007, H4, etc.) . Which HID Conversion kit do I pick?

Unless otherwise listed, every set of HID lights we offer is single filament, meaning if your S4 has one single bulb for the high and low beams, you can only change one function to HID. The other function would be eliminated, thus, we only recommend connecting the HID kit to your low beams in those situations.

I want/own aftermarket projector lights. Can I use S4 HID headlight conversion kits with them?

HID lights actually work best with a projector lens to help disperse the light. HOWEVER, please be advised that aftermarket headlight and some foglight PROJECTOR LIGHTS USE DIFFERENT TYPES OF BULBS (usually H1, H3, etc). You would have to buy the HID kit made for your Projector Headlight bulbs since the S4 HID kits we list are for your S4's STOCK headlights. We recommend customers to get their projector headlights first to find out exactly which type of HID conversion kit they need.
Warning: YOU MUST USE LOW WATTAGE HID KITS WHEN INSTALLING INTO PROJECTOR HEADLIGHTS. Projector headlights usually have a cramped space for the bulb, and a high wattage HID Lights put out too much heat for the projector lens to handle. This is also true for most S4 Projector Foglights.

Is this HID Conversion kit legal for street use on my S4's headlight or foglight assemblies?

Laws vary by jurisdiction, but so long as you have pointed the headlamps on your S4 pointed downward so your new HID Lights aren't blinding other drivers (or police officers!) you will probably avoid trouble. Some areas such as certain Canada communities require that the High Beams on your S4 match the Low Beams, so if your low beam is HID, then your High Beam must be HID as well. Please do not install a single filament H.I.D. headlight kit if your community has such a law and your stock bulbs use one dual filament for both high and low beam functions.

How do I aim my S4 Headlamps to keep my HID lights from blinding other drivers?

Usually there are little gears with screws on the inside of your S4's headlamps. You can usually turn these by hand or with a screwdriver. Park facing a wall and adjust until the light is set to an appropriate level usually LOWER than your headlights (to ensure a downward angle)

I have the premium package/higher model for my S4 and my vehicle came with stock OEM HID Xenon lights already. Can I use your S4 HID Conversion kit to replace my factory HID kit?

Sorry, but no. If your S4 came pre-equipped with an H.I.D. kit, you will need to buy a different type of HID bulb (D2C, D2S, etc) and ballast, usually referred to as a "Stock Replacement HID Bulb / Ballast." Our kits are CONVERSION kits and are made to work with stock halogen bulb harnesses only. Though rare, if your S4 came with stock HID foglights, then the HID foglight kits we offer would also not work.

I don't want junk parts on my S4, what is the warranty on this HID conversion kit?

Every S4 HID Headlight kit and S4 HID Foglight kit we sell is valid for warranty replacement for 1 year from the original date of purchase so long as they are properly installed on your S4, unmodified, and used for normal daily driving.

Features

Simple Plug and play installation, just mount the ballasts in a secure location and connect 4 plugs

Brilliant yellow color for best visibility in adverse weather conditions

Slim ballast for easy installation in cramped spaces

Vibration, water, and dust resistant bulbs

Rated for 3,000+ hours of usage

Over 3x brighter than your stock halogen bulbs

Fitment

The HID Kits offered on this page are designed to specifically fit a Audi S4 produced during the following model years:
2009, 2010, 2011 or 09, 10, 11. Please also note any specific model notes on the product title at the top of the page.

While it may fit other vehicles, Please try the vehicle search on the center of our main page. or email us if you have any questions.

Tunersdepot® HID Kits
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